Extreme Networks ExtremeWare Enterprise Manager Guía de usuario Pagina 176
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10-6 E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
E
XTREME
S
TANDBY
R
OUTER
P
ROTOCOL
S
TANDBY
S
WITCH
B
EHAVIOR
If a switch is in standby mode, it exchanges ESRP packets with other switches on that
same VLAN. When a switch is in standby, it does not perform layer 3 routing or layer 2
switching services for the VLAN. From a layer 3 routing protocol perspective (for
example, RIP or OSPF), when in standby for the VLAN, the switch marks the router
interface associated with the VLAN as down. From a layer 2 switching perspective, no
forwarding occurs between the member ports of the VLAN; this prevents loops and
maintains redundancy.
E
LECTING
THE
M
ASTER
S
WITCH
A new master can be elected in one of the following ways:
• A communicated parameter change
• Loss of communication between master and slave(s).
If a parameter that determines the master changes (for example, link loss or priority
change), the election of the new master typically occurs within one timer cycle (2
seconds by default). If a switch in standby mode loses its connection with the master, a
new election (using the same precedence order indicated previously) occurs. The new
election typically takes place in three times the defined timer cycle (6 seconds by
default).
F
AILOVER
T
IME
Failover time is largely determined by the following factors:
• The ESRP timer setting.
• The routing protocol being used for inter-router connectivity if layer 3 redundancy is
used. OSPF fail-over time is faster than RIP fail-over time.
The failover time associated with the ESRP protocol is dependent on the timer setting
and the nature of the failure. The default timer setting is 2 seconds; the range is 1 to 255
seconds.
If routing is configured, the failover of the particular routing protocol (such as RIP V1,
RIP V2, or OSPF) is added to the failover time associated with ESRP.
- ExtremeWare Software 1
- User Guide 1
- Contents 3
- 2ACCESSING THE SWITCH 4
- 3MANAGING THE SWITCH 4
- AND PORTS 5
- 6VIRTUAL LANS (VLANS) 6
- 7FORWARDING DATABASE (FDB) 7
- 8SPANNING TREE PROTOCOL (STP) 8
- 9QUALITY OF SERVICE (QOS) 8
- 11 IP UNICAST ROUTING 10
- 14 IP MULTICAST ROUTING 12
- 15 IPX ROUTING 13
- 16 ACCESS POLICIES 13
- ERVER LOAD BALANCING (SLB) 15
- 19 USING EXTREMEWARE VISTA 16
- ASUPPORTED STANDARDS 17
- BTROUBLESHOOTING 17
- INDEX OF COMMANDS 18
- NTRODUCTION 19
- ONVENTIONS 20
- UBLICATIONS 21
- ExtremeWare Overview 23
- IFFERENCES 27
- UNCTIONALITY 28
- ULL L3 FUNCTIONALITY 28
- ICENSING 29
- BTAINING 30
- MacVLanDiscover 31
- Accessing the Switch 33
- BBREVIATED SYNTAX 34
- NDERSTANDING 35
- CCESSING 36
- Table 2- 2: Line-Editing Keys 37
- is +/- minutes from 39
- ANAGEMENT 41
- DMINISTRATOR 42
- HANGING THE DEFAULT PASSWORD 43
- IEWING ACCOUNTS 44
- RACEROUTE 47
- Managing the Switch 49
- 10/100 UTP M 50
- 2 (SSH2) 55
- <tcp_port_number>} 56
- ONTROLLING 57
- RADIUS C 61
- UTHENTICATION 62
- ONFIGURING RADIUS CLIENT 62
- Table 3- 2: RADIUS Commands 63
- UTHENTICATING 67
- TACACS+ 68
- Configuring BlackDiamond and 75
- Alpine Switch Slots and Ports 75
- Load-Sharing 83
- 4-port groups x x x x 83
- 2-port groups x x x x 83
- ISCOVERY 87
- IRRORING 98
- ONFIGURING 100
- Failover linksPrimary links 101
- Virtual LANs (VLANs) 103
- Marketing 105
- System 1 106
- System 2 106
- Accounting 107
- Engineering 107
- SSIGNING A VLAN TAG 108
- REDEFINED PROTOCOL FILTERS 112
- = IP traffic 112
- = All other traffic 112
- ONFIGURATION 116
- ISPLAYING 118
- EGISTRATION 119
- VLAN Red 120
- Untagged 120
- UIDELINES 123
- IMITATIONS 123
- Forwarding Database (FDB) 127
- ORWARDING 128
- Spanning Tree Protocol (STP) 133
- ONFIGURATIONS 135
- Sales, Personnel, Marketing 136
- Sales & Engineering 137
- ISABLING 141
- ESETTING 141
- Quality of Service (QoS) 143
- PPLICATIONS 145
- SSIGNING 147
- TTRIBUTES 147
- ERMANENT MAC ADDRESSES 152
- DDRESSES 153
- LACKHOLE 153
- ERIFYING 154
- ONFIGURING 802.1P PRIORITY 154
- BSERVING 155
- NFORMATION 155
- EPLACING 160
- point instead of repeating 161
- ROUPINGS 162
- ERFORMANCE 163
- ODIFYING 165
- ETERMINING 173
- LGORITHMS 175
- BD_F32F8 177
- BD_F32T8 177
- SUG_4fr8 178
- SUG_4FX8 178
- SUG_48f8 179
- OSPF/BGP4 180
- AGGREGATION 183
- Table 10-1: ESRP Commands 184
- OSPF or RIP 187
- IP Unicast Routing 191
- NTERFACES 192
- OPULATING 193
- ULTIPLE ROUTES 194
- NCAPABLE 195
- RIORITIES 196
- ULTINETTING 197
- PERATION 198
- GGREGATION 201
- 1234AB5678 202
- ROPERTIES 203
- DHCP/BOOTP R 206
- ROCESSING 208
- Table 11-4: Basic IP Commands 209
- = NetBIOS traffic 216
- Interior Gateway Routing 221
- Protocols 221
- ROTOCOLS 222
- VER VIEW 223
- Virtual link 229
- Area 2 Area 1 Area 0 229
- ABR 1 ABR 2 230
- Area 1 Area 0 Area 3 230
- ASBR ASBR 231
- ISTRIBUTING 233
- Triggered update 236
- Exterior Gateway Routing 251
- OMMUNITIES 253
- OUTE CONFEDERATION EXAMPLE 254
- IP Multicast Routing 267
- ULTICAST 268
- PARSE MODE (PIM-SM) 269
- ULTICASTING 270
- Protocol (IGMP) 273
- PIM-DM C 276
- IPX Routing 281
- 192.207.35.0 282
- Personnel 282
- 192.207.36.0 282
- NCAPSULATION 283
- YNAMIC ROUTES 284
- TATIC ROUTES 284
- DVERTISEMENTS 285
- Access Policies 295
- ESTABLISHED 298
- 10.10.10.1 305
- 10.10.10.100 10.10.20.100 305
- 10.10.20.1 305
- NET20 VLANNET10 VLAN 306
- XAMPLE 2: FILTER ICMP PACKETS 308
- PECIFYING 311
- EQUENCE NUMBERING 311
- Internet 314
- Backbone (RIP) 314
- SalesEngsvrs 314
- Engsvrs Sales 314
- OUTE MAP EXAMPLE 326
- Server Load Balancing (SLB) 331
- OMPONENTS 332
- ALANCING 334
- RANSLATIONAL 338
- RANSLATION 340
- Clients Servers 341
- DVERTISEMENT 342
- ONNECTIONS 344
- PPLICATION 348
- Server pools 349
- ERVICE-CHECK COMMANDS 355
- ERSISTENCE 356
- VAILABILITY 357
- SLB switch 358
- SING MANUAL FAIL-BACK 361
- EDIRECTION 368
- Client VLAN 370
- Cache VLAN 370
- ONITORING 371
- Table 18-1 describes 372
- IAGNOSTICS 373
- TATISTICS 374
- EAL-TIME DISPLAY 379
- Table 18-5: Logging Commands 381
- Table 18-6: Event Actions 385
- Using ExtremeWare Vista 387
- AVIGATING 390
- ROWSER CONTROLS 391
- ILTERING 392
- Software Upgrade and Boot 395
- EBOOTING 396
- YNCHRONIZING 401
- Supported Standards 405
- UPPORTED 406
- TANDARDS 406
- Troubleshooting 407
- ROUBLESHOOTING 408
- NTERFACE 409
- Numerics 415
- (table) 3-23 422
- Index of Commands 425
- Index of Commands - iii 427
- Index of Commands - v 429
- replacement ports 9-17 431
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